Hi James and the community friends!
I have tried everything to connect HDMI to the viewHD HDMI audio extractor (one hdmi out to my projector and the HDMI audio out to my old Denon avr-3806 receiver). The LPCM coming from splitter is always 2 channel even on best audio setting in ATV. I then connected HDMI directly from ATV to Denon then initially got MultiCH PCM but it’s quite finicky working and not working intermittently and the passthrough does not allow 4k anyway, so that option is out the window.
The only other option I feel possible for me is to just use the dolby digital option on ATV.
My question is
when you select this option (and it seems to work perfectly with my viewHD audio extractor even on toslink optical cable outputting Dolby digital signal to denon receiver) does ATV actually “re-encode” the already lossy (original DD is lossy, correct?) signal even further? It sounds analogous to encoding MP3 again to another MP3 file which is one thing that you want to avoid at all cost? If that’s the case I won’t use it. But if it’s at least “passing through” the dolby digital signal untouched and encoding only DTS signal to DD in order for this to work, I’m willing to tolerate it…
I know it’s been discussed, but still there is no news on the horizon of apple ever allowing DTS and DD passthrough from ATV in the future?
I really thought ATV was going to be “the” machine for me, as it sounded like it was decoding every format available to lossless MultiCH which would be perfect for my Denon receiver which I thought would allow all untouched LPCM over HDMI but is no longer the case. I really love infuse for its subtitle ability so willing to forego slight sound loss but just wanted to know for the DD output option whether it’s “reencoding everything” through another lossy process.
Many thanks for your insight.